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BQ24773RUYR
Texas Instruments
IC BATT MFUNC MULTI-CHEM 28WQFN
20167 Pcs New Original In Stock
Battery Multi-Function Controller IC Multi-Chemistry 28-WQFN (4x4)
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5.0 / 5.0
- (224 Ratings)
BQ24773RUYR
Product Overview
1230565
DiGi Electronics Part Number
BQ24773RUYR-DGManufacturer
Texas Instruments
BQ24773RUYR
Description
IC BATT MFUNC MULTI-CHEM 28WQFNInventory
20167 Pcs New Original In Stock
Battery Multi-Function Controller IC Multi-Chemistry 28-WQFN (4x4)
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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BQ24773RUYR Technical Specifications
Category
Power Management (PMIC), Battery Management
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Function
Multi-Function Controller
Battery Chemistry
Multi-Chemistry
Number of Cells
-
Fault Protection
-
Interface
I2C
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Package / Case
28-WFQFN Exposed Pad
Supplier Device Package
28-WQFN (4x4)
Base Product Number
BQ24773
Datasheet & Documents
Manufacturer Product Page
BQ24773RUYR Specifications
HTML Datasheet
BQ24773RUYR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
BQ24773RUYR-DG
296-BQ24773RUYRDKR
296-BQ24773RUYRCT
296-BQ24773RUYRTR
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Overall, DiGi Electronics excels in both logistics efficiency and after-sales service.
de desembre 02, 2025
You get excellent packaging quality and great prices in one package—DiGi Electronics delivers every time.
de desembre 02, 2025
The team at DiGi Electronics exemplifies expertise and dedication in their service.
de desembre 02, 2025
The speed and reliability of their logistics have exceeded my expectations.
de desembre 02, 2025
The support staff is proactive and courteous, providing valuable after-sales guidance.
de desembre 02, 2025
Every purchase I made from DiGi Electronics has been dependable and worth every penny.
de desembre 02, 2025
Their extensive inventory allows us to access a wide range of products quickly and efficiently.
de desembre 02, 2025
Excellent price-value ratio and quick shipment—highly recommend.
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Frequently Asked Questions (FAQ)
What are the key design risks when integrating the BQ24773RUYR into a multi-chemistry battery charger system, and how can I mitigate them during PCB layout?
The BQ24773RUYR’s exposed thermal pad and high-frequency switching nodes require careful PCB layout to avoid thermal throttling and noise coupling. Ensure the 28-WQFN package’s exposed pad is soldered directly to a solid ground plane with multiple vias for heat dissipation. Keep high-current paths (e.g., ACIN, BAT, SRP/SRN) short and wide to minimize inductance and voltage drops. Place input/output capacitors close to the IC to suppress switching noise. Failure to follow these practices may result in reduced efficiency, inaccurate charge termination, or false fault triggering due to ground bounce or thermal runaway under high-load conditions.
Can the BQ24773RUYR safely replace the BQ24780S in a 19V laptop charging design without firmware or hardware changes?
No, direct drop-in replacement of the BQ24780S with the BQ24773RUYR is not recommended without validation. While both support multi-chemistry charging and I2C control, the BQ24773RUYR has different default register configurations, charge voltage/current limits, and fault response timing. Additionally, the BQ24773RUYR lacks the BQ24780S’s integrated ADC for system telemetry, which may break host communication in designs relying on real-time data. Replacing it requires reviewing charge algorithm settings, recalibrating protection thresholds, and potentially updating the EC firmware to avoid unsafe charging states or boot failures.
How does the BQ24773RUYR handle charger disable during system load transients, and what design considerations prevent unintended shutdowns?
The BQ24773RUYR uses dynamic power management (DPM) to prioritize system load over charging, but aggressive load steps can trigger input current limit (ICL) or battery supplement mode unexpectedly. To prevent nuisance shutdowns, ensure the input source can deliver peak system current plus charging current without drooping below the UVLO threshold. Use a low-ESR input capacitor bank near the ACIN pin and configure the ICL threshold in software via I2C to match your adapter capability. Undersizing the input filter or setting ICL too low may cause the BQ24773RUYR to repeatedly enter/exit charge mode, stressing components and reducing battery life.
Is the BQ24773RUYR suitable for automotive applications requiring operation beyond 85°C ambient, and what derating is needed?
No, the BQ24773RUYR is not rated for automotive under-hood environments where ambient temperatures exceed 85°C. Its specified operating range is -40°C to +85°C (TA), and junction temperature must stay below 125°C. In high-ambient scenarios (e.g., >70°C), you must derate charge current significantly and ensure adequate airflow or heatsinking via the exposed pad. Exceeding thermal limits risks triggering thermal shutdown or long-term reliability degradation. For automotive use, consider automotive-grade alternatives like the BQ24770S (AEC-Q100 qualified) instead of relying on the commercial-grade BQ24773RUYR.
What reliability concerns should I evaluate when using the BQ24773RUYR in a 24/7 industrial UPS with frequent charge/discharge cycles?
In continuous-operation UPS systems, the BQ24773RUYR’s long-term reliability hinges on thermal management, solder joint integrity, and firmware robustness. The 28-WQFN package is susceptible to thermal cycling fatigue if the PCB lacks sufficient copper pour under the exposed pad. Monitor junction temperature via external sensing or estimate it using power dissipation (Icharge × Vdrop) and θJA. Additionally, ensure the I2C interface includes pull-up resistors with noise filtering to prevent communication errors during EMI events common in industrial settings. Without proper derating and layout, repeated thermal stress can lead to premature failure, especially if the MSL2 moisture sensitivity isn’t handled per J-STD-033 during assembly.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
BQ24773RUYR CAD Models
Texas Instruments BQ24773RUYR PCB symbols & footprints
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